Form for concrete structures



March 22, 1927.

F. W. STEVENS FORM FOR CONCRETE STRUCTURES 1 Filed Oct. 4. 192 sSheets-Sheet 1 Fay. 6a 82 Znveno'r:

09660 rneys.

M 22 192 1,621,563 arch 7 F. w. STEVENS Fonm FOR CONCRETE STRUCTURESFiled Oct. 4'. 1925 5 Sheets-Sheet 5 Inventor:-

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Patented Mar. 22, 1927-.

cam *srr FRANK W. STEVENS, 0F NEWTON, MASSACHUSETTS, ASSIGNOR, BYDIRECTH A NI D ME SN'E ASSIGNMENTS, T0 HERBERT C. VENO, 0F -NEWTON,MASSACHUSETTS.

FORM non coNcaErE srauo'ruans.

Application filed October 4, 1923. Serial No. 666,597.

This invention relates to forms for contional metallic form consistingof a suitable number of sections or units of a variety of forms, all ofwhich may be inexpensively produced from plates and standard struc turalshapes, which sections easily and quickly assembled to constitute a formfora wall in accordance with substantially any plan, which form, whenset up, is securely supported and braced and is other wise of suificientstrength to perform its intended function, and which can be as readilydisassembled after the wall has set, the sections being capable ofrepeated use in different assembled relationships for an indefiniteperiod, and being practically indestructible.

The foregoing and other objects of the invention, together with meanswhereby the same may be carried intoefi'ect, willbest be understood fromthe-following description of one embodiment thereof illustrated in theaccompanying drawings. It will be understood however that the particularconstruction andarrangements described and shown have been chosen for-illustratlve purposes merely, and that the invention, as defined by theclai-rns hereunto appended, may be other- -wise practised withoutdeparture from the spirit and scope thereof.

. similar to In said drawings- 7 Figs. 1-, 2 and 3 are, respectively, aside elevation, an edge elevation, and a plan view of one of the flatpanel sections.

Figs. 4 and 5 are sections taken on the lines and 2.

Figs. 6 and 6 are fragmentary side views Fig. 1 of similar panelsections of different widths.

, Fig. 7 is a planview of the panel section H shown in Fig. 6*.

Figs. "8 and 9 are perspective views of two I of the horizontal anglebars employed for supporting, alining and bracing the assemor units maybe illustrating means for tying together oppoand =55,: respectively,Figs. 1

bled form, said figures slflOWing bars or air} ferent lengths. i Fig."10 is a side elevation, partly in sec- Fig. 13 is a perspective View,partly broken away, of one of the inside corner units.

Fig. 14 is a perspective iew of an assembly of the units shown inthepreceding figures to constitute a form for a short angular,

section of wall. I

Fig. 15 is a detail horizontal sectional view site sides of the form.

The form herein shown comprises a suitablenumber of sections ofdifferent shapes which may be assembled to build up a form of anydesired size and configuration, v together with keys for connecting theassemw bled sections, and members for 'alining the sections andsupporting and bracing the form as a whole.

As herein shown, the sections comprise flat, side and end panels which'form the straight sides and ends of the wall, outside corner membersfor connecting the panels at the exterior corners'or angles ofi'thewall, and inside corner un ts for forming "the interior angles.

In Figs. 1 to 5is illustrated a flat panel section indicated as a wholeby the numeral QO -Said panel comprises a {rectangular metal plate 21 ofa length corresponding to the desired height of the form and whose 7width may, as hereinafter explained, vary in accordance with the desiredwidth of the panel of which it forms apart. Secured, as.

by spot-welding, to the upperand' lower edges of the plate'21, arechannel bars '22,

while similarly secured to the lateral or ver- I tical edges of saidplate are angle ba'rs23,

said channel and angle bars constituting a strengthening or stiii'eningframe for the 7 panel. The angle bars 23 are disposed with their flangeswhich are secured to theplate 21 turned inwardly or toward one another,

while the other flanges are turned outwardly parallel to one another andconstitute outwardly projecting flanges at the extreme edges of thepanel. Said outwardly pro'jectv 1 Clesections can be made, all of suchsections being of the same length or height 11'- respective of theirwidth. Said panel sections are assembled to constitute straight portionsof the form, the panels 200, 201, etc. being side panels, andthe panels20 constituting end panels and being also used as side panels whereshort lengths are rcqui-red, as shown, for example, in Fig. 10, whereone panel 20 is assembled with two panels 200.

Cooperating with the panel sections. for

' the purpose of alining and bracing the same and to constitute a topand a base for the assembled form, are angle bars which are provided ina plurality of lengths, two being shown at 27 and 270 in Figs. 8 and 9,and others being shown at 271 and 272 in Fig. 14. When a plurality ofpanels 20, 200, etc. have been assembled in alined relationship, asshownin Fig. 10, an angle bar 27, 270, etc. is placed horizontally andlongitudinally ofthe series at both the top and bottom thereof, oneflange'of said bar being inserted in the. alined end slots 25 of the.abutted flanges 23 of the contiguous sections, the other flange of saidangle bar overlying and engaging the ends of said flanges 23, as shownin Fig. 11. 1

The outside corner sections comprise angle bars 28 (Figs. 12 and 14) ofa length corresponding to the height of the panel sections, the flangesof said angle bars being formed intermediate their ends with slots 240,corresponding in number and arrangement to the slots 24 in the flanges23,- and in their ends with open slots 250 corresponding to the slots 25of said flanges 23.

Each inside corner section,rdesignated as a whole in Figs. 13 and 14 bythenumeral 29, comprises a permanently assembled unit consisting of twoplates 30 disposed at an angle to one another and the inner or proximateedges of which are secured toa vertical angle bar 31.

To the outer edges of said plates are secured, vertical angle bars 32which are similar in form and arrangement to the angle bars 23 of thepanel sections, said bars being formed intermediate their ends withslots 241 corresponding to the slots 24 and in their ends with openslots 251 corresponding to the slots 25. The

interior angle of the unit thus constructed 1s braced at the top andbottom of said unit by an angular channel bar 220, corresponding .to thechannel bars 22 of the panels.

Theseveral sections above described are secured tog-ether in assembledrelationship by bifurcated'gravity keys 35, whose form is most clearlyshown in Fig. 10. Each of said keys comprises a flat metal stamping 0tU-shape including a head 350 having rounded corners and depending legs351 the opposite inner edges 352 of which converge toward the head 350.lVhen the contiguous flanges 23, 28, 32, etc, of adjoining sections areplaced in abutted engagement, with the slots 24, 240, 241, etc. inregister with 7 one another the keys 35 are inserted laterally throughthe registering slots, as shown at the upper left-hand corner of Fig.10, the rounded heads 350 facilitating such insertion, and the dependinglegs 351 caused to embrace the abuttingflai s. Thereupon said keydropsby gravity into a position wherein the converging edges 352 tend towedge the flanges tightly together, and subsequent use of the structuretends to lock them more tightly. In Fig. 14 is shown an assembled formcomprising six panel sections 200, constituting the side panels, twopanel sections 20 constituting end panels, live outside corner sections28, and one inside corner section 29, all secured together by keys 35,and a suitable number of top and bottom horizontal angle bars 27, 270,271, and 272. Said angle bars'arc engaged with the end slots of thevertical flanges of the several sections, the lower" angle barsconstituting, a base for the form, and the upper angle bars constitutinga reinforced top which may also serve as a support for another set ofsections superimposed upon the/section shown. V

In Fig. 15 is illustrated means for tying together opposite side panelsof the form in order to prevent spreading thereof when the wall ispoured. As shown insaid figure,

the plates 21 are formed with oppositely dis posed openings 40 whichreceive looped portions 41 of a transversely extending wire 42. Into theloops 41 at the exterior of the plates 21 are inserted nails 43. Afterthe wall is poured, the nails 43 are removed, the panels 21 withdrawnlaterally, and the loops 41 cut off, leaving the body of the' wire 42 inthe wall.

Havin thus described my invention, I claim:

1. In form for concrete structures, a series of panel sections havingabutting vertical edge flanges provided with registering slots, andgravity keys in said'slots for connecting the contiguous flanges ofadjoining panels, said keys being bifurcated, and the legs thereofengaging the opposite faces of said flanges, respectively.

2. In a form for concrete structures comprising a series of panels, aU-shaped gravity key for connecting said panels, said key comprising arounded head and two depending legs having adjacent edges which convergetoward said head.

3. A form for concrete structures comprising side panels having abuttingflanges on their contiguous edges respectively, an angle barconstituting an outside corner of the form and having flanges abuttingthe flanges of adjacent panels, and angle bars engaging the ends of theabutting flanges of said panels and first named bar.

i. A form for concrete structures comprising side and end panels havingabutting flangeson their contiguous edges respectively, an angle barconstituting an outside corner of the torrn and having flanges abuttingthe flanges of adjacent panels, and angle bars engaging the ends of theabutting flanges of said panels and first named'bar.

5. A form for concrete structures comprising side panels and an insidecorner unit composed of two plates rigidly connected at an angle to oneanother and having at their outer edges means whereby'the same may beconnected with the contiguous edges of adjoining side panels, and meansfor bracing said unit at its upper and lower corners.

6. In a form for concrete structures, an inside corner unit comprisingtwo plates 'dis posed at an angle to one another, an angle bar to whichthe inner vertical edges of said plates are secured, and angle barssecured tov the outer vertical edges of said plates.

7; In a form forv concrete structures, an inside corner unit comprisingtwo plates disposed at an angle to one another, an angle bar to whichthe inner vertical edges of said plates are secured, and angle barssecured to the outer vertical edges of saidplates, the

pro ecting flanges of said angle bars being slotted. g v

8. A. sectional form for concrete structures comprising flat panelsections having vertical edge flanges, inside corner sections eachcomposed of two angularly disposed plates rigidly connected at theirinner edges and having vertical flanges at their outer edges, outsidecorner sections each comprising a vertically disposed angle bar, theflanges of all of said sections being slotted, and gravity keys forconnecting the contiguous flanges of adjoining sections. I

9; A sectional form for concrete structures comprising flat panelsections having vertical edge flanges, inside corner units each composedof two angularly' disposed plates permanently connected at theirinneredges and having vertical flanges at their outer edges, outside cornersections each comprising a vertically disposed angle bar, means fordetachably connecting the contiguous flanges of adjoining sections, andhorizontal angle bars disposed respectively at the top and bottom ofeach alined series ot'flat panel sections, each of said horizontal anglebars having a flange detachably connected with the edge flanges ot theseveral sections.

7 In testimony whereof I affix my signature.

v FRANK w. sTEvENs.

